Swivel-coupling



A. V. GULLBRG.

SWIVEL COUPLING APPLICATION FILED APR.2I, 1919.

Patented Jan. 18, 1921.

PATENT OFFICE..

UNITED STATES ARTHUR V. GULLBORG, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MFSNE ASSIGNMENTS, T THE BASSICK MANUFACTURING COMPANY, A CORPORATION 0F DELAWARE.

SWIVEL-COUPLING.

Application sied Aprii ai,

of Illinois, have invented a certain new and useful Improvement in Swivel-Couplings, oi which the followingr is a full, clear, concise, and exact'description, reference being had to the accompanying drawings, forming a part of this specication.

My invention relates to improvements in swivel couplings and is especially concerned with couplings of this character designed to be used with lubricating apparatus such as that disclosed in my co-pending applications Serial Nos. 216,586 and 267,858, led on February 11, 1918, and-December 21, 1918, res ectively.

` he objects of my invention are:

First: to provide a swivel coupling which is simple in construction, economical to manufacture, and easy to operate; y

Second: to provide a swivel coupling hav ing the above characteristics, which will effectively resist any leakage of lubricantor other fluid even though the fluid be under hih pressure; and

lIhird: to provide a coupling member which can be quickly and easily attached to and detached from the member with which it is designed to co-act.

Other objects will appear as this description progresses, reference being had to the accompanying drawings, in which- Figure 1 is a side elevation oi a grease gun, the discharge conduit oi which is provided with my improved swivel coupling,

the view showing my coupling attached to a coupling member adapted to he connected to a bearing to be lubricated;

Fig. f2 `'is a view similar to Fig. 1, except on an enlarged scale, in which the grease gun and portion of the liexible discharge conduit are broken away;

Fig. 5 is a central longitudinal section taken ou Fig 2 in substantially the plane of the drawing;

Fig. is a view showing a modified iorni of the means which I employ for securing one end oi the flexible discharge conduit fthe coupling member, this view being a Section through the discharge conduit and Specification of Letters Patent.

Patented J an. 18, 1921.

191e. semi No. 291,775.

showing the coupling member in end elevation; and

Fig. 5 is a longitudinal section taken on substantially line 545 of Fig. 4e.

Throughout the several views similar reierence characters are used to refer to similar parts.

Referring to the drawings, the reference character 10 indicates the barrel oi a grease gun, such as that above referred to, which is provided with a plunger (not shown) having a screwthreaded piston rod 11 and a flexible discharge conduit 12.

My improved swivel coupling for the free end of the iiexible discharge conduit 12 will now be described by reference to F ig. 8, in which the reference character 13 indicates a sleeve, the bore oi which is successively contracted toward the lower end of this ligure, to provide shoulders 14; and 15. metal cup 16 is rotatably mounted in the upper end of the bore ci the sleeve 13, and rests against the shoulder the flexible conduit 12 is soldered or otherwise secured in the cup 16, the cup 16 being provided with an aperture 17 in its bottom registering with the bore oi the conduit 12. Thc'cup 16 is retained in the sleeve 13 by means ci a ring 13, over which the end oi 'the sleeve is swaged, as shown at 1Q.

A pair ci cup leathers 2G and 21 or other suitable gaskets are disposed in` the sleeve 13 in spaced relation with their iiaiiges er;n

tending toward each other, the cup leather Q0 resting against the bottom ci the cup 16 to seal the space between the outer periphery oi the cup 18 and the inner wall oi' the bore of the tube 13, aniL the cup leather 21 normally resting upon the shoulder 15. two cup leathers are provided with openings and :23 respectively, which are coaxial with the opening in the bottom oi the cup 16.

The two cup leathers are yieldingly held in spaced relation by means of a coil spring` Q11 positioned between them and having its opposite ends bearing upon the washers 25 and 26 respectiveli, which bear against the bottoms ci the cup leathers.

in Figs. "i, 2 and 3 l have illustrated coupling members 27, which are designed to be connected to the bearings to be lubricated. rlhese coupling members are described in my The free end oi f securing the cup 16 in the sleeve.

` first mentioned application referred to above,

thereof, the outer ends projecting from the walls of the tubular member, as shown in Fig. 2. The sleeve 13 is provided at its lower end. with a bayonet slot 34, the lower side of which is'recessed, as shown at 36.

When it is desired to use a grease gun equipped with my improved swivel coupling to supply lubricant to one of the coupling members 27, the sleeve 13 is brought into register with the upper end of the coupling member 27 and slipped down over it, when, by applying a slight pressure t0 the sleeve, the tension of the spring 24 is overcome and the sleeve moves downwardly sufficiently to permit the sleeve to ybe rotated sufficiently tobring they recess 36 of the bayonet slot beneath the end of the pin 33, whereupon when the pressure is released from the sleeve, the spring 24L will cause the sleeve to move upwardly and seat the kend of the in 34 in the recess 36, so as to prevent rotation of the sleeve 13. These operations move the cup leather 21 away from its shoulderl 15 to substantially the position shown in Fig.

-3, and also place the spring 24 under tension, thereby yieldingly holding the cup leather 20 against the bottom of the cup 16 and the cup leather 21 against the top of the coupling member 27, so as to prevent any initial flow of lubricant between these members. When the grease gun is then operated to force lubricant into the bearing under pressure, the cup leathers 20 and 21 will'be tightly forced against the wall of the bore of the tube 13, and against the bottom of the cup 16 and the top of the tubular member 2H The greater the pressure exerted upon the lubricant, the tighter the cup leathers will be ur ed against the members specified above, anc there will thus be no opportunity for the lubricant to escape past these cup leathers and out of the sleeve 13.

In Figs. 4 and 5 I have illustrated a modification of the means which I employ for In these figures a recess 38 is formed in the inner wall of the bore of the sleeve for receiving the split ring 39, which is of sufficient width to project over the upper edge of the cup 16, but between the inner side of which and the flexible conduit 12 there is suiiicient room to permit the ring to be sprung inwardly, so that it can be inserted into the recess 38.

While I have described the details of the top or bottom or"upwardly or` downwardly, these words are used in merely a relative sense and are not to be construed in ytheir absolute sense.

Having thus described my invention, what I claim is:

1. A swivel coupling" comprising ya sleeve having a shoulder formed in one end of the bore thereof, means in the/other end of said sleeve for receiving one end of a conduit, comprising a cup rotatably mounted in said sleeve, and opening outwardly, the bottom of said cup being perforated, a ring for engaging the edge of said cup, having its outer edge seated in thewall of the bore of said sleeve, a pair of perforated cup leathers disposed in said sleeve, with their flanges extending Vtoward each other, and a spring located between said cup leathers and yieldingly holding oney of said l cup leathers against said shoulder and the other of said cup leathers against the bottom of said cup.

2. A swivel coupling comprising a sleeve having a shoulder formed in one end of the bore thereof, means in the other end of said sleeve for receiving one end of a conduit, comprising a cup rotatably mounted in said sleeve, and opening outwardly, the bottom of said cup being perforated, a pair o f perforated cup leathers disposed in said sleeve, with their flangesextending toward each other, and a spring located between said cup leathers and yieldingly` holdino' one of said cup leathers against said shoiilder and-the other of said cup leathers against the bottom of said cup.

A swivel coupling comprising a sleeve having a shoulder formed in one end of the bore thereof, means in the other end of said sleeve for receiving one end of a conduit, comprising a cup rotatably mounted in said sleeve and opening outwardly, the bottom of said cup being perforated, a pair of perforated gaskets disposed in said sleeve, and

bore thereof. means rotatably mounted on the opposite tend of said sleeve, for securing one end of a conduit, a pair of gaskets disposed in said sleeve in spaced relation,- and means between Said gaskets for yieldingly holding one of said gaskets against said shoulder and the other of said `gaskets against said rotatably mounted means.

5. A swivel coupling comprising a sleeve, means rotatably mounted on one end of said sleeve for securing one end of a conduit, a pair of gaskets movably mounted in said sleeve in spaced relation, and means for yieldingly holding said gaskets in spaced relation. y

'6. A swivel coupling comprising a sleeve having an open end provided with means for making a quick detachable connection with a coupling member, a vcup rotatably mounted on the other end of said sleeve, said cup opening outwardly to receive one end of a conduit, and means for holding said cup against longitudinal displacement relatively to said sleeve.

7. A swivel coupling comprising a sleeve having an open end provided with means for making a quick detachable connection with a coupling member, a cup rotatably mounted on the other end of said sleeve, said cup opening outwardly to receive one end of a conduit and means (3o-acting with the outer end of said sleeve and the outer end of said cup for preventing longitudinal displacement of said cup relatively to said sleeve.

In Witness whereof, I hereunto subscribe my name this 16 da of April, 1919i ARTH V. GULLBORG.

Vitnesses:

JOHN L. STEFFEN, Gno. P. ADAMS. 

